CN111319111A - Sheet manufacturing apparatus and sheet manufacturing method - Google Patents

Abstract

A sheet manufacturing apparatus (100) according to the present invention includes a manufacturing unit (102) that manufactures sheets, and a plurality of supplying units (10) that supply loaded objects (T) to the manufacturing unit (102), In the sheet manufacturing apparatus (100), the loaded objects (T) are conveyed so as to overlap the loaded objects (T) supplied from the plurality of supply units (10).

Description

Sheet manufacturing apparatus and sheet manufacturing method

technical field

The present invention relates to a sheet manufacturing apparatus and a sheet manufacturing method.

Background technique

Conventionally, there has been known a sheet manufacturing apparatus that manufactures sheets using waste paper as a raw material. In addition, Patent Document 1 describes a paper recycling apparatus that defibrates a paper sheet into a fibrous form in a dry defibrillator and shapes the paper. The paper recycling apparatus described in Patent Document 1 has an automatic conveying mechanism for continuously feeding waste paper into the primary shredder.

prior art literature

Patent Literature

Patent Document 1: Japanese Patent Laid-Open No. 2012-144819

SUMMARY OF THE INVENTION

The problem to be solved by the invention

However, the paper recycling apparatus (sheet manufacturing apparatus) described in Patent Document 1 has only one automatic conveying mechanism (feeder) for feeding waste paper into the primary shredder. Therefore, the properties of the inputted waste paper may affect the properties of the produced sheet. For example, when the printing ratio (duty) of waste paper is high, the produced sheet appears gray. In addition, when the waste paper is thick paper, the grammage of the produced sheet becomes large. In addition, in the case of the waste paper that has been defibrated several times, the fiber length of the waste paper is shortened, and the strength of the produced sheet is lowered. As described above, in the sheet manufacturing apparatus described in Patent Document 1, the characteristics of the manufactured sheet may vary depending on the characteristics of the supplied waste paper.

One of the objects according to some aspects of the present invention is to provide a sheet manufacturing apparatus capable of suppressing fluctuations in the manufactured sheet. Furthermore, one of the objects according to some aspects of the present invention is to provide a sheet manufacturing method capable of suppressing fluctuations in the manufactured sheet.

methods for solving problems

The present invention has been accomplished in order to solve at least a part of the above-mentioned problems, and can be realized as the following aspects or application examples.

One aspect of the sheet manufacturing apparatus according to the present invention includes: a manufacturing unit that manufactures sheets; and a plurality of supplying units that supply loaded objects to the manufacturing unit, and in the sheet manufacturing apparatus, the sheet manufacturing apparatus includes The loaded objects are conveyed in such a manner that the loaded objects supplied from the plurality of supply units overlap.

In such a sheet manufacturing apparatus, even when one of the overlapping loads affects the properties of the sheet to be manufactured, if the other load is a substance that does not affect the properties of the manufactured sheet, Since the mixture is mixed and averaged, it is possible to suppress fluctuations in the characteristics of the produced sheet.

The sheet manufacturing apparatus according to the present invention may include a control unit that causes the supply unit to supply the load so as to partially overlap the load.

In such a sheet manufacturing apparatus, a sheet with a small variation in characteristics can be manufactured.

In the sheet manufacturing apparatus according to the present invention, the plurality of supply units may include a main supply unit for supplying waste paper to the manufacturing unit, and a sub-supply unit for supplying waste paper to the manufacturing unit. A predetermined raw material is supplied to the sheet manufacturing apparatus, and the waste paper supplied from the main supply section and the raw material supplied from the sub-supply section are superimposed on the sheet manufacturing apparatus. Waste paper and the raw material are transported.

In such a sheet manufacturing apparatus, by mixing a predetermined raw material with waste paper, it is possible to more reliably suppress fluctuations in the characteristics of the sheet to be manufactured depending on the characteristics of the waste paper.

The sheet manufacturing apparatus according to the present invention may include a control unit that selectively performs supply from the sub-supply unit in accordance with the waste paper.

In such a sheet manufacturing apparatus, the frequency of use of raw materials can be reduced.

In the sheet manufacturing apparatus according to the present invention, the amount of waste paper that can be loaded in the sub-feeding section may be compared with the volume of the waste paper that can be loaded in the main feeding section. The volume of the raw material is small.

In such a sheet manufacturing apparatus, raw materials can be reduced.

In the sheet manufacturing apparatus according to the present invention, the sub-supply portion may be arranged above the main supply portion.

In such a sheet manufacturing apparatus, replenishment of the raw material of the sub-supply unit can be easily performed.

One aspect of the sheet manufacturing method according to the present invention includes: a step of conveying the loads supplied from a plurality of supply parts so as to overlap them; and a step of manufacturing a sheet using the loads.

In such a sheet manufacturing method, even if one of the overlapping loads affects the properties of the sheet to be manufactured, if the other load is a substance that does not affect the properties of the sheet to be manufactured, Since the mixture is mixed and averaged, it is possible to suppress fluctuations in the characteristics of the produced sheet.

One aspect of the sheet manufacturing apparatus according to the present invention includes: a manufacturing unit that manufactures sheets; a plurality of supplying units that supply loads to the manufacturing unit; The supply section supplies the loads alternately.

In such a sheet manufacturing apparatus, even if the load supplied from one supply unit affects the characteristics of the sheet to be manufactured, if the load supplied from the other supply unit does not affect the manufactured sheet The properties of the flakes are mixed and averaged, so that fluctuations in the properties of the produced flakes can be suppressed.

One aspect of the sheet manufacturing apparatus according to the present invention includes: a manufacturing unit that manufactures sheets; and a plurality of supplying units that supply loads to the manufacturing unit, and in the sheet manufacturing apparatus, During the period in which one of the supplying parts is supplying, the supplying is performed from the other supplying part among the plurality of supplying parts.

In such a sheet manufacturing apparatus, it is possible to supply the loaded object to the manufacturing section so that the loaded object supplied from one supply section and the loaded object supplied from the other supply section overlap.

In these cases, it is preferable that, even if the load cannot be supplied by any one of the plurality of supply parts, the other supply part continues to supply the load.

In such a sheet manufacturing apparatus, the sheet manufacturing can be continued without interruption.

Description of drawings

FIG. 1 is a diagram schematically showing a sheet manufacturing apparatus according to the present embodiment.

FIG. 2 is a perspective view schematically showing a supply part, a guide part, and a coarse crushing part of the sheet manufacturing apparatus according to the present embodiment.

FIG. 3 is a diagram for explaining a supply unit, a guide unit, and a control unit of the sheet manufacturing apparatus according to the present embodiment.

4 is a flowchart for explaining a first control process of the control unit of the sheet manufacturing apparatus according to the present embodiment.

FIG. 5 is a flowchart for explaining a second control process of the control unit of the sheet manufacturing apparatus according to the present embodiment.

6 is a flowchart for explaining a third control process of the control unit of the sheet manufacturing apparatus according to the present embodiment.

FIG. 7 is a diagram for explaining waste paper and raw materials being conveyed.

FIG. 8 is a perspective view schematically showing a supply part, a guide part, and a coarse crushing part of a sheet manufacturing apparatus according to a modification of the present embodiment.

Detailed ways

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, the embodiments described below are not intended to unduly limit the content of the present invention described in the claims. In addition, the structure demonstrated below is not necessarily an essential structure element of this invention.

1. Sheet manufacturing apparatus

1.1. Structure

First, the sheet manufacturing apparatus according to the present embodiment will be described with reference to the drawings. FIG. 1 is a diagram schematically showing a sheet manufacturing apparatus 100 according to the present embodiment.

As shown in FIG. 1 , the sheet manufacturing apparatus 100 includes a supply unit 10 , a manufacturing unit 102 , and a control unit 140 . The manufacturing unit 102 manufactures sheets. The production unit 102 includes a coarse crushing unit 12 , a defibrating unit 20 , a classifying unit 30 , a screening unit 40 , a mixing unit 50 , a stacking unit 60 , a tablet forming unit 70 , a sheet forming unit 80 , and a cutting unit 90 .

The supply unit 10 supplies the raw material to the coarse crushing unit 12 . The supply unit is, for example, an automatic feeding unit for continuously feeding raw materials into the coarse crushing unit 12 .

In addition, the detailed structure etc. of the supply part 10 are mentioned later. Further, the sheet manufacturing apparatus 100 includes a guide unit 120 that conveys the waste paper and the like supplied from the supply unit 10 to the shredding unit 12 . Details of the guide unit 120 and the control unit 140 that controls the supply unit 10 will also be described later.

The coarse crushing unit 12 cuts the raw material supplied from the supply unit 10 into fine pieces in the air. The shape and size of the flakes are, for example, square flakes of several cm. In the example shown in the figure, the shredding part 12 has the shredding blade 14 , and the input raw material can be cut by the shredding blade 14 . As the primary shredding unit 12, for example, a shredder is used. The raw material cut by the coarse crushing unit 12 is received by the hopper 1 and then transferred (conveyed) to the defibrating unit 20 via the pipe 2 .

The defibrating unit 20 defibrates the raw material cut by the coarse crushing unit 12 . Here, "defibrating" refers to fibers obtained by disassembling a raw material (object to be defibrated) in which a plurality of fibers are bonded together. The defibrating part 20 also has the function of separating the resin particles, ink, carbon powder, anti-seepage agent, etc. adhering to the raw material from the fibers.

The substance passing through the defibrated portion 20 is referred to as "defibrated material". The "defibrated product" may contain resin (resin for bonding a plurality of fibers to each other) particles, ink, Toner and other colorants, anti-seepage agents, paper strength enhancers and other additives. The shape of the defibrated product obtained by dismantling is a string shape or a ribbon shape. The defibrated product obtained by dismantling may exist in a state not entangled with other disassembled fibers (independent state), or it may be entangled with other defibrated products obtained by disassembly to form a bulk state (in a state of forming a so-called "clump").

The defibration part 20 is dry-type defibrated in the atmosphere (in the air). Specifically, as the defibrating part 20, an impeller mill was used. The defibrating unit 20 has a function of generating an air flow that sucks the raw material and discharges the defibrated product. Thereby, the defibration part 20 can suck the raw material from the inlet port 22 together with the air flow by the air flow generated by itself, perform defibration treatment, and transport it to the discharge port 24 . The defibrated product passed through the defibrating part 20 is transferred to the classifying part 30 via the pipe 3 .

The classifying unit 30 classifies the defibrated material that has passed through the defibrating unit 20 . Specifically, the classifying unit 30 separates and removes smaller substances or substances with lower densities (resin particles, colorants, additives, etc.) among the defibrated products. Thereby, it is possible to increase the proportion of fibers that are larger or denser in the defibrated product.

As the classifying part 30, an air flow classifier was used. The airflow classifier is a device that generates a swirling airflow and uses the difference in centrifugal force due to the size and density of the classified material to separate, and can adjust the classification point by adjusting the speed of the airflow and the centrifugal force. . Specifically, a cyclone, an elbow jet separator, a vortex classifier, or the like is used as the classification unit 30 . In particular, the cyclone as shown in the figure can be preferably used as the classification unit 30 because of its simple structure.

The classification unit 30 has, for example, an introduction port 31 , a cylindrical portion 32 connected to the introduction port 31 , an inverted conical portion 33 located below the cylindrical portion 32 and continuous with the cylindrical portion 32 , and provided at the center of the lower portion of the inverted conical portion 33 . The lower discharge port 34 and the upper discharge port 35 provided in the upper center of the cylindrical portion 32 are provided.

In the classifying part 30 , the air flow carrying the defibrated material introduced from the introduction port 31 becomes a circular motion in the cylindrical part 32 . As a result, centrifugal force is applied to the introduced defibrated product, and the classifying unit 30 can be separated into fibers (first classified product) and defibrated products that are larger and denser than resin particles and ink particles among the defibrated products. Among the materials, resin particles, colorants, additives, etc., which are smaller and lower in density than fibers (second fraction). The first classified product is discharged from the lower discharge port 34 and introduced into the screening unit 40 via the pipe 4 . On the other hand, the second classified material is discharged from the upper discharge port 35 to the receiving portion 36 via the pipe 5 .

The screening section 40 introduces the first classified product that has passed through the classification section 30 from the introduction port 42, and performs screening according to the length of the fibers. As the screening part 40, a sieve (sieve) is used, for example. The screening part 40 has a mesh (filter mesh, wire mesh), and is capable of separating fibers or particles (substances that pass through the mesh, first screening objects) larger than the mesh contained in the first classification Fibres, undissolved flakes or clumps (substances that do not pass through the mesh, secondary screens) of the size of the eyelets are separated. For example, after being received by the hopper, the first sieve is transferred to the mixing unit 50 via the pipe 7 . The second sieve is returned to the defibrating unit 20 from the discharge port 44 via the pipe 8 . Specifically, the screening unit 40 is a cylindrical screen that can be rotated by a motor. As the mesh of the screening part 40, for example, a metal mesh, an expanded metal obtained by stretching a metal plate having cut holes therein, and a punched metal mesh having holes formed in a metal plate by a punch or the like are used.

The mixing unit 50 mixes the first sieved object that has passed through the sieving unit 40 and additives including resin. The mixing unit 50 includes an additive supply unit 52 for supplying the additive, a pipe 54 for conveying the sieve and the additive, and a blower 56 . In the illustrated example, the additive is supplied to the pipe 54 from the additive supply unit 52 via the funnel 9 . Tube 54 is continuous with tube 7 .

In the mixing unit 50, the air flow is generated by the blower 56, and in the pipe 54, the first sieve and the additive can be mixed and conveyed. In addition, the mechanism for mixing the first sieve and the additive is not particularly limited, and may be a mechanism for stirring by a blade rotating at a high speed, or a mechanism using the rotation of a container such as a V-type mixer.

As the additive supply unit 52 , a screw feeder as shown in FIG. 1 , a pan feeder not shown, or the like is used. The additive supplied from the additive supply unit 52 includes resin for binding the plurality of fibers. At the point in time when the resin was supplied, the plurality of fibers were not bonded. The resin melts and binds the plurality of fibers when passing through the sheet forming portion 80 .

The resin supplied from the additive supply unit 52 is a thermoplastic resin or a thermosetting resin, for example, AS resin, ABS resin, polypropylene, polyethylene, polyvinyl chloride, polystyrene, acrylic resin, polyester resin, polyparaphenylene Ethylene glycol dicarboxylate, polyphenylene ether, polybutylene terephthalate, nylon, polyamide, polycarbonate, polyacetal, polyphenylene sulfide, polyether ether ketone, etc. These resins may be used alone or in combination as appropriate. The additive supplied from the additive supply unit 52 may be in a fibrous form or in a powder form.

In addition, the additive supplied from the additive supply unit 52 may include, in addition to the resin for binding fibers, a colorant for coloring fibers, a colorant for preventing fiber aggregation, depending on the type of sheet to be produced Agglomeration inhibitor, flame retardant for making fibers etc. less flammable. The mixture that has passed through the mixing unit 50 (the mixture of the first screening material and the additive) is transferred to the accumulation unit 60 via the pipe 54 .

The accumulation part 60 introduces the mixture that has passed through the mixing part 50 from the introduction port 62 , disassembles the defibrated material (fibers) entangled, disperses in the air, and falls. Furthermore, when the resin of the additive supplied from the additive supply unit 52 is in the form of fibers, the accumulation unit 60 disassembles the entangled resin. Thereby, the depositing portion can deposit the mixture on the tablet forming portion 70 with good uniformity.

As the accumulation part, a rotating cylindrical sieve was used. The accumulation part 60 has a mesh, and causes fibers or particles (substances that pass through the mesh) contained in the mixture that has passed through the mixing part 50 that are smaller than the size of the mesh of the mesh to drop. The configuration of the stacking unit 60 is the same as that of the screening unit 40 , for example.

In addition, the "sieve" of the stacking unit 60 may not have a function of screening a specific object. That is, the "sieve" used as the accumulation part 60 refers to a sieve provided with a mesh, and the accumulation part 60 can drop all the mixture introduced into the accumulation part 60 .

The tablet forming unit 70 forms the tablet W by depositing the mixture that has passed through the depositing unit 60 . The web forming part 70 has, for example, a mesh belt 72 , a stretching roller 74 and a suction mechanism 76 .

The mesh belt 72 accumulates the passing objects that have passed through the opening of the accumulation part 60 (the opening of the mesh) while moving. The mesh belt 72 is stretched by the stretching rollers 74 and has a structure that allows air to pass through so that the passing objects cannot pass easily. The mesh belt 72 is moved by the self-rotation of the stretching roller 74 . The web W is formed on the mesh belt 72 by continuously dropping and stacking the passing objects that have passed through the accumulation portion 60 while the mesh belt 72 is continuously moving. The mesh belt 72 is, for example, made of metal, resin, cloth, nonwoven fabric, or the like.

The suction mechanism 76 is provided below the mesh belt 72 (on the side opposite to the accumulation portion 60 side). The suction mechanism 76 can generate downward airflow (flow toward the mesh belt 72 from the stacking portion 60 ). By the suction mechanism 76 , the mixture dispersed in the air by the accumulation portion 60 can be sucked onto the mesh belt 72 . Thereby, the discharge speed of the discharge from the accumulation part 60 can be increased. In addition, by the suction mechanism 76, a downward airflow can be formed in the falling path of the mixture, so that it is possible to prevent the defibrillated substances or the additives from being entangled with each other during the falling process.

As described above, by passing through the stacking part 60 and the web forming part 70 (web forming step), the web W in a soft and fluffy state rich in air is formed. The webs W stacked on the mesh belt 72 are conveyed to the sheet forming section 80 .

Moreover, in the example shown in figure, the humidity control part 78 which controls the humidity of the web W is provided. The humidity control part 78 can add water or water vapor|steam to the web W, and can adjust the quantity ratio of the web W and water.

The sheet forming unit 80 forms the sheet S by pressing and heating the web W stacked on the mesh belt 72 . In the sheet forming section 80 , by applying heat to the mixture of the defibrated material and the additive mixed in the web W, the plurality of fibers in the mixture can be bonded to each other via the additive (resin).

As the sheet forming portion 80 , for example, a heating roller (heater roller), a thermoforming machine, a hot plate, a heater, an infrared heater, and a flash fixing device are used. In the illustrated example, the sheet forming portion 80 includes a first bonding portion 82 and a second bonding portion 84 , and the bonding portions 82 and 84 each include a pair of heating rollers 86 . By configuring the bonding portions 82 and 84 in the form of the heating roller 86, compared to the case where the bonding portions 82 and 84 are configured as a plate-shaped pressing device (flat pressing device), it is possible to continuously While the web W is conveyed, the sheet S is formed. In addition, the number of the heating rollers 86 is not particularly limited.

The cutting part 90 cuts the sheet S formed by the sheet forming part 80 . In the illustrated example, the cutting portion 90 has a first cutting portion 92 that cuts the sheet S in a direction intersecting with the conveying direction of the sheet S, and a second cutting portion 92 that cuts the sheet S in a direction parallel to the conveying direction 94. The second cutting portion 94 cuts, for example, the sheet S that has passed through the first cutting portion 92 .

As a result of the above, a single sheet S of a predetermined size is formed. The cut single sheet S is discharged to the discharge portion 96 .

1.2. Supply Department

The supply part 10 of the sheet manufacturing apparatus 100 is demonstrated in detail. FIG. 2 is a perspective view schematically showing the supply unit 10 . FIG. 3 is a diagram schematically showing the supply unit 10 . In addition, in FIG. 2 and FIG. 3, the guide part 120 is also shown in figure. In addition, in FIG. 2, the coarse crushing part 12 is also shown in figure. However, in FIG. 2 , the frame body 16 of the shredding portion 12 is shown, and the shredding blade 14 is accommodated in the inside of the frame body 16 (see FIG. 1 ). For convenience of explanation, in FIG. 1 , the frame body 16 is omitted, and the supply unit 10 is illustrated in a simplified manner. In addition, in FIG. 2, a part of the load T is abbreviate|omitted. In addition, FIG. 3 also shows a functional block diagram of the control unit 140 .

As shown in FIGS. 2 and 3 , the supply unit 10 supplies the loaded object T to the manufacturing unit 102 . Specifically, the supply part 10 supplies the loaded object T to the coarse crushing part 12 via the guide part 120 . The load T is, for example, a sheet of paper (A4 or letter size) or a roll paper that can be supplied by the supply unit 10 . The load T is waste paper or a predetermined raw material.

Here, waste paper refers to used paper, newspapers, magazines, etc., which are used as raw materials of recycled paper, and the basic characteristics (for example, grammage, printing rate, and additives contained in the sheet manufacturing apparatus 100) are not known. type, fiber length, etc.) of the detailed paper. The waste paper may be a sheet produced by the sheet production apparatus 100 . The predetermined raw material refers to a sheet specified by an instruction manual or a homepage of the sheet manufacturing apparatus 100 , and is a sheet whose basic characteristics are known to the sheet manufacturing apparatus 100 .

As shown in FIG. 3 , the supply part 10 has a stacking part 110 inside the casing 116 . The load T is loaded (stowed) on the stacking portion 110 . The topmost loaded object T among the loaded objects T is in contact with the pickup roller 113 . When the pick-up roller 113 rotates, the load T of the highest position is conveyed to the right side in FIG. 3 . The conveyed load T is conveyed to the shredding unit 120 from the take-out port 118 provided in the frame body 116 by the output roller 114 . Each time one or more loaded objects T are conveyed by the pickup roller 113 , the stacking portion 110 is raised. Further, the position of the stacking portion 110 can be moved up and down according to the position of the pickup roller 113 in the vertical direction. Thereby, the position of the stacking portion 110 becomes a position corresponding to the loading amount of the loading object T. As shown in FIG. Further, the position of the pickup roller 113 is substantially fixed with respect to the output roller 114 . In the illustrated example, the stacking portion 110 is connected to the vertical driving shaft portion 112 , and the vertical driving shaft portion 112 is rotated so that the stacking portion 110 can move up and down. Rotation of the vertical drive shaft portion 112 is performed by being driven by a motor (not shown) connected to the vertical drive shaft portion 112 . As the vertical drive shaft portion 112, for example, a lead screw is used.

In addition, as long as the loaded load T can be supplied to the manufacturing part 102, the form of the supply part 10 is not specifically limited. For example, instead of the vertical drive shaft portion 112 , a spring that urges the stack portion 110 toward the pickup roller 113 may be provided. In addition, the number of the rollers 113 and 114 is not particularly limited.

A plurality of supply units 10 are provided. Although two supply parts 10 are provided in the example shown in FIG. 2, the number is not particularly limited. For example, among the plurality of supply units 10, one supply unit 10 is the main supply unit 10a, and the other supply unit 10 is the sub-supply unit 10b. That is, the plurality of supply units 10 include a main supply unit 10a and a sub-supply unit 10b. The main feeding unit 10 a is a feeding unit that feeds the waste paper T1 to the shredding unit 12 . The sub-supply part 10b is a supply part which supplies the predetermined raw material T2 to the coarse crushing part 12.

Preferably, the whiteness of the raw material T2 supplied from the sub-supply part 10b is higher than that of the waste paper T1. Thereby, compared with the case where only the waste paper T1 is supplied to the coarse crushing part 12, the sheet|seat S with high whiteness can be manufactured. Preferably, the fiber length of the raw material T2 is longer than the fiber length of the waste paper T1. The fiber length of the waste paper T1 may be shortened due to repeated defibration. Therefore, by supplying the raw material T2 with a long fiber length, the sheet S with high strength can be produced. Preferably, the basic weight of the raw material T2 is the target basic weight (target basic weight of the sheet S manufactured by the sheet manufacturing apparatus 100). Thereby, the basic weight of the sheet|seat S manufactured by the sheet manufacturing apparatus 100 can be made close to a target value (desired value). Preferably, the raw material T2 does not contain foreign matter (impurities other than fibers) (or the amount of foreign matter is smaller than that of the waste paper T1). Thereby, the ratio of the foreign matter contained in the sheet|seat S manufactured by the sheet manufacturing apparatus 100 can be reduced. On the other hand, the size or thickness of the raw material T2 of the raw material T2 is reduced in order to obtain it at a lower cost than commercially available paper.

The sub-supply part 10b is arrange|positioned above the main-supply part 10a. The distance between the sub-supply part 10b and the shredding part 12 is larger than the distance between the main supply part 10a and the shredding part 12 . In the example shown in the figure, the main supply part 10 a is in contact with the shredding part 12 , and the sub-supply part 10 b is separated from the shredding part 12 .

The volume (volume) of the raw material T2 that can be loaded in the sub-feeder 10b is smaller than the volume (volume) of the waste paper T1 that can be loaded in the main feeder 10a. Here, "the volume of the load T (waste paper T1 or raw material T2) that can be loaded in the supply unit" means that the stacked load T can be supplied in a state where the stacker 110 is located at the bottom. The overall volume of the load T in the state of . The volume of the load T that can be loaded is shown in, for example, the catalog or the instruction manual of the sheet manufacturing apparatus 100 . In the example shown in the figure, the size of the sub-supply part 10b in the vertical direction is smaller than the size of the main supply part 10a in the vertical direction, and the volume of the casing 116 of the sub-supply part 10b is smaller than that of the casing of the main-supply part 10a. The volume of 116 is relatively small. In addition, regarding the dimension in the conveyance direction of the raw material T2 or the dimension in the direction orthogonal to the conveyance direction, the sub-supply part 10b may be made smaller than the main supply part 10a.

In addition, the load T has a size of density and a size of grammage. Therefore, the volume of the load T that can be loaded in the supply unit 10 differs depending on the load T to be loaded.

The guide section 120 conveys the loaded objects T so as to overlap the loaded objects T supplied from the plurality of supply sections 10 . Specifically, the guide unit 120 conveys the waste paper T1 and the raw material T2 to the shredding unit 12 so that the waste paper T1 supplied from the main supply unit 10a and the raw material T2 supplied from the sub-supply unit 10b overlap. The guide portion 120 is formed of, for example, metal, resin, or the like.

The guide portion 120 has, for example, a plate-like portion 122 connected to the shredding portion 12 , a first guide portion 124 that guides the waste paper T1 to the plate-like portion 122 , and a second guide portion 126 that guides the raw material to the plate-like portion 122 . The first guide portion 124 is connected to the frame body 116 of the main supply portion 10a. The second guide portion 126 is connected to the frame body 116 of the sub-supply portion 10b. In the illustrated example, the plate-shaped part 122 is separated from the guide parts 124 and 126 , and a part of the waste paper T1 and a part of the raw material T2 overlap between the plate-shaped part 122 and the first guide part 124 . In addition, the form of the guide portion 120 is not particularly limited as long as the loads T supplied from the plurality of supply portions 10 can be conveyed so as to overlap.

The sheet manufacturing apparatus 100 has sensors 131 , 132 , 133 , 134 , 135 , 136 , 137 , and 138 .

The first sensor 131 is provided in the housing 116 of the main supply unit 10a. The second sensor 132 is provided in the casing 116 of the sub-supply unit 10b. The sensors 131 and 132 can detect whether or not the load T is present on the stacker 110 . In addition, the form and installation position of the sensors 131 and 132 are not particularly limited as long as the presence or absence of the load T on the stacker 110 can be detected.

The third sensor 133 is provided on the outer side of the housing 116 and in the vicinity of the extraction port 118 of the main supply unit 10a. The fourth sensor 134 is provided on the outer side of the housing 116 and in the vicinity of the extraction port 118 of the sub-supply part 10b. The sensors 133 and 134 can detect whether or not the load T is supplied from the supply unit 10 (whether or not it is discharged from the take-out port 118 ). In addition, as long as it can detect whether the load T is supplied from the supply part 10, the form and installation position of the sensors 133 and 134 are not specifically limited. In addition, in FIG. 2, illustration of the sensors 133 and 134 is abbreviate|omitted.

The fifth sensor 135, the sixth sensor 136, the seventh sensor 137, and the eighth sensor 138 are provided in the housing 116 of the main supply unit 10a. The sensors 135, 136, 137, and 138 can detect the basic characteristics of the waste paper T1. The fifth sensor 135 is, for example, a scanner, and can detect the whiteness of the waste paper T1. The sixth sensor 136 is, for example, a scanner, and detects the mark of the waste paper T1 (the mark given by the mark portion 98 shown in FIG. 1 ). The number of times the waste paper T1 is collected can be known from the detected marks of the waste paper T1, and the fiber length of the waste paper T1 can be estimated from the number of times the waste paper T1 is collected. Information related to the number of times of collection and the fiber length may also be stored in the storage unit 143 of the control unit 140 . The seventh sensor 137 is, for example, a basic weight sensor, and can detect the basic weight of the waste paper T1. The eighth sensor 138 is, for example, a scanner, and can detect the presence or absence of foreign matter (impurities such as dust) contained in the waste paper T1.

In addition, a flow sensor (not shown) is provided in the pipe 8 (see FIG. 1 ), and the fiber length of the waste paper T1 may be estimated based on the flow rate detected by the flow sensor. In addition, although not shown in the figure, for example, the sensors 135, 136, and the sensor 138 may be integrated to form a single sensor. In addition, although not shown, the form and installation position of the sensors 135, 136, 137, 138 are not particularly limited as long as the basic characteristics of the waste paper T1 can be detected, for example. While all of the four sensors 135, 136, 137, 138 may be present, at least one of them may also be present.

1.3. Control Department

As shown in FIG. 3 , the control unit 140 includes an operation unit 141 , an output unit 142 , a storage unit 143 , a storage medium 144 , and a processing unit 145 .

The operation unit 141 performs a process of acquiring an operation signal corresponding to the user's operation and transmitting the signal to the processing unit 145 . The operation unit 141 is, for example, a button, a key, a touch panel type display, a microphone, or the like.

The output unit 142 displays the processing result and the like of the processing unit 145 based on the signal input from the processing unit 145 . The output unit 142 displays the processing result of the processing unit 145 in characters, for example. The output unit 142 is, for example, an LCD (Liquid Crystal Display), a CRT (Cathode Ray Tube, a cathode ray tube), a touch panel display, or the like. The output unit 142 may output the processing result of the processing unit 145 and the like by sound.

The storage unit 143 stores programs, data, and the like for the processing unit 145 to execute various control processes. The storage unit 143 is also used as a work area of the processing unit 145 , and temporarily responds to operation signals input from the operation unit 141 , programs or data read from the storage medium 144 or the like, and the processing unit 145 executes various programs according to various programs. Calculation results, etc. are stored.

The storage medium 144 is a computer-readable storage medium for storing various application programs or data. In addition, the program may be transmitted to the storage medium 144 (storage unit 143 ) from an information storage medium possessed by the host device (server) via a network or the like. The storage medium 144 can also function as a storage unit that stores data that needs to be stored for a long time among the data generated by the processing of the processing unit 145 . The storage medium 144 is realized by, for example, an optical disk (CD, DVD), a magneto-optical disk (MO), a magnetic disk, a hard disk, a magnetic tape, a memory (ROM, flash memory, etc.).

The processing unit 145 executes various control processes in accordance with a program stored in the storage unit 143 or a program stored in the storage medium 144 . The processing unit 145 executes, for example, any one of the first control process, the second control process, or the third control process described below. The functions of the processing unit 145 can be realized by hardware or programs such as various processors (CPU, DSP, etc.), ASIC (gate array, etc.). In addition, at least a part of the processing unit 145 may be realized by hardware (dedicated circuit).

1.3.1. The first control process

First, the first control processing will be described. FIG. 4 is a flowchart for explaining the first control process of the control unit 140 .

For example, when the user requests processing for manufacturing the sheet S via the operation unit 141 , the processing unit 145 receives an operation signal from the operation unit 141 and starts processing.

First, the processing unit 145 receives the operation signal from the operation unit 141, and causes the supply units 10a and 10b to supply the load T (step S150). Specifically, the processing unit 145 receives an operation signal from the operation unit 141, and outputs to the main supply unit 10a a signal for driving the motor connected to the vertical drive shaft 112 of the main supply unit 10a and the rollers 113 and 114 (No. A signal), and outputs a signal (second signal) for driving the motor and the rollers 113 and 114 connected to the vertical drive shaft portion 112 of the sub-supply portion 10b to the sub-supply portion 10b. The first signal and the second signal are signals for supplying one sheet of waste paper T1 and raw material T2, respectively. The processing unit 145, for example, receives the operation signal from the operation unit 141 and outputs the first signal and the second signal once, and then stops the output of the first signal and the second signal.

The processing part 145 makes the supply part 10a, 10b perform supply so that at least a part of the load T1 may overlap. Specifically, the processing unit 145 outputs the first signal and the second signal to the guide unit 120 so that the waste paper T1 supplied from the main supply unit 10a and the raw material T2 supplied from the sub-supply unit 10b inevitably overlap each other in the guide unit 120 . The main supply part 10a and the sub-supply part 10b. Based on the first signal and the second signal, the supply parts 10a and 10b supply the load T to the guide part 120, and the guide part 120 supplies the load T to the load T so as to overlap the load T supplied from the plurality of supply parts 10. By conveying, the manufacturing unit 120 can manufacture the sheet S using the supplied load T.

Next, the processing unit 145 determines whether or not the waste paper T1 exists (is stacked) on the stacking unit 110 of the main feeding unit 10a (step S152). Specifically, the processing unit 145 determines whether or not there is the waste paper T1 based on the signal from the first sensor 131 provided in the main feeding unit 10a.

When the processing unit 145 determines that there is no waste paper T1 (NO in step S152 ), the processing unit 145 outputs, for example, to the output unit 142 for displaying that there is no waste paper T1 in the main feeding unit 10a signal and end processing. After that, the user can replenish the waste paper T1 to the main feeder 10a.

When the processing unit 145 determines that there is waste paper T1 (YES in step S152 ), the processing unit 145 determines whether or not the raw material T2 exists in the stacking unit 110 of the sub-feeding unit 10b (step S154 ). Specifically, the processing unit 145 determines whether or not the raw material T2 exists based on the information from the second sensor 132 provided in the sub-supply unit 10b.

When the processing unit 145 determines that there is no raw material T2 (in the case of NO in step S154 ), the processing unit 145 outputs, for example, to the output unit 142 a signal for indicating that there is no raw material T2 in the sub-supply unit 10b , and the process ends. After that, the user can replenish the raw material T2 to the sub-supply unit 10b.

When the processing unit 145 determines that the raw material T2 is present (YES in step S154 ), the processing unit 145 causes the supply units 10 a and 10 b to supply the waste paper T1 and the raw material T2 again (step S150 ). Through the above control process, in the sheet manufacturing apparatus 100 , the loaded objects T supplied from the plurality of supply units 10 can be conveyed so as to overlap, and the sheet S can be manufactured using the loaded objects T.

In addition, the order of step S152 and step S154 is not particularly limited. For example, step S152 and step S154 may be implemented simultaneously.

In addition, since the sensors 133, 134, 135, 136, 137, and 138 are not used in the first control process, these sensors may not be provided.

1.3.2. Second control process

Next, the second control process will be described. FIG. 5 is a flowchart for explaining the second control process of the control unit 140 . Hereinafter, in the description of the second control process, the differences from the above-described example of the first control process will be described, and the description of the same points will be omitted.

For example, when the user requests processing for manufacturing the sheet S via the operation unit 141 , the processing unit 145 receives an operation signal from the operation unit 141 and starts processing.

First, the processing unit 145 receives an operation signal from the operation unit 141, and judges whether the waste paper T1 stacked on the stacking unit 110 of the main feeding unit 10a is within a predetermined specification (step S160). Specifically, the processing unit 145 acquires the whiteness of the waste paper T1 based on the signal from the fifth sensor 135, and judges whether the whiteness of the waste paper T1 is within a predetermined specification. Then, the processing unit 145 acquires the fiber length of the waste paper T1 based on the signal from the sixth sensor 136, and judges whether or not the fiber length of the waste paper T1 is within a predetermined specification. Then, the processing unit 145 acquires the basic weight of the waste paper T1 based on the signal from the seventh sensor 137, and determines whether or not the basic weight of the waste paper T1 is within a predetermined specification. Then, the processing unit acquires the amount of foreign matter included in the waste paper T1 based on the signal from the eighth sensor 138, and determines whether the amount of foreign matter included in the waste paper T1 is within a predetermined specification.

For example, the processing unit 145 determines that the waste paper T1 is within the predetermined specification when all items such as the whiteness, fiber length, grammage, and amount of foreign matter of the waste paper T1 are within the specifications, and only When one item is out of specification, it is determined that the waste paper T1 is out of the predetermined specification. For example, the specifications of whiteness, fiber length, grammage, and amount of foreign matter are stored in the storage unit 143 in advance, and the processing unit 145 reads the whiteness and the like stored in the storage unit 143, and compares them with the acquired whiteness and the like. Compare and judge.

When the processing unit 145 determines that the waste paper T1 is within the predetermined specification (YES in step S160 ), the processing unit 145 causes the main supply unit 10a to supply the waste paper T1 (step S162 ).

When the processing unit 145 determines that the waste paper T1 is out of the predetermined specification (NO in step S160 ), the processing unit 145 causes the main supply unit 10a and the sub-supply unit 10b to supply the waste paper T1 and the raw material T2 (step S150).

In the second control process, as described above, the supply from the sub-supply unit 10b can be selectively performed according to the basic properties of the waste paper T1 (eg, whiteness, fiber length, basic weight, and presence or absence of foreign matter). That is, when the waste paper T1 is within the predetermined specification, the raw material T2 is not supplied from the sub-supply unit 10b, and only when the waste paper T1 is outside the predetermined specification, the raw material T2 is supplied from the sub-supply unit 10b. Thereby, the frequency of use of the raw material T2 can be reduced.

In addition, although not shown in the figure, the sheet manufacturing apparatus 100 may have a plurality of sub-supply units 10b. For example, the sheet manufacturing apparatus 100 may include a first sub-supply part 10b, a second sub-supply part 10b, a third sub-supply part 10b, a fourth sub-supply part 10b, and a fifth sub-supply part 10b, wherein the first sub-supply part 10b The part 10b accommodates the raw material T2 having a higher whiteness than the waste paper T1, the second sub-supply part 10b accommodates the raw material T2 whose fiber length is longer than that of the waste paper T1, and the third sub-supply part 10b accommodates the waste paper T2. The raw material T2 having a grammage smaller than that of the paper T1, the fourth sub-feeder 10b accommodates the raw material T2 having a grammage larger than that of the waste paper T1, and the fifth sub-feeder 10b accommodates the foreign matter larger than the waste paper T1. Less raw material T2. In addition, the processing unit 145 may supply the raw material T2 from one of the five supply units 10b in accordance with the basic characteristics of the waste paper T1.

For example, when it is determined that the basis weight of the waste paper T1 is smaller than a predetermined specification, the processing unit 145 outputs a signal for supplying from the fourth sub-feeding unit 10b. For example, when it is determined that the amount of foreign matter in the waste paper T1 is larger than a predetermined specification, the processing unit 145 outputs a signal for supplying from the fifth sub-supplying unit 10b. When the waste paper T1 having layers other than fibers such as coated paper is used, the amount of foreign matter increases.

In addition, since the sensors 133 and 134 are not used in the second control process, these sensors may not be provided.

1.3.3. The third control process

Next, the third control process will be described. FIG. 6 is a flowchart for explaining the third control process of the control unit 140 . Hereinafter, in the description of the third control process, the differences from the examples of the first and second control processes described above will be described, and the description of the same points will be omitted.

For example, when the user requests processing for manufacturing the sheet S via the operation unit 141 , the processing unit 145 receives an operation signal from the operation unit 141 and starts processing.

First, the processing unit 145 receives an operation signal from the operation unit 141, and causes the main supply unit 10a to supply the waste paper T1 (step S170). Specifically, the processing unit 145 receives an operation signal from the operation unit 141, and outputs to the main supply unit 10a a signal for driving the motor connected to the vertical drive shaft 112 of the main supply unit 10a and the rollers 113 and 114 (No. three signals).

Next, the processing unit 145 judges whether or not the waste paper T1 can be supplied from the main supply unit 10a (step S171). Specifically, the processing unit 145 determines whether or not the waste paper T1 is discharged from the extraction port 118 based on the third sensor 133 .

When the processing unit 145 determines that the waste paper T1 can be supplied (YES in step S171 ), the processing unit 145 stores N=2 in the storage unit 143 (step S172 ).

When the processing unit 145 determines that the waste paper T1 cannot be supplied (NO in step S171 ), the processing unit 145 stores N=4 in the storage unit 143 (step S173 ).

Next, the processing unit 145 reads the value of N stored in the storage unit 143 (step S174).

1.3.3.1. The case of N=2

When the value of N read in step S174 is 2, the processing unit 145 supplies the raw material T2 from the sub-supply unit 10b at the first interval (step S175). Specifically, the processing unit 145 outputs to the sub-supply unit 10b a signal for driving the motor and the rollers 113 and 114 connected to the vertical drive shaft 112 of the sub-supply unit 10b.

Next, the processing unit 145 judges whether or not the sub-supply unit 10b can supply the raw material T2 (step S176). Specifically, the processing unit 145 determines whether or not the raw material T2 is discharged from the extraction port 118 based on the fourth sensor 134 .

When the processing unit 145 determines that the raw material T2 can be supplied (YES in step S176 ), the processing unit 145 rewrites the value of N and stores N=1 in the storage unit 143 (step S177 ).

Next, the processing unit 145 determines whether or not the waste paper T1 exists on the stacking unit 110 of the main feeding unit 10a based on the first sensor 131 (step S178).

When the processing unit 145 determines that there is no waste paper T1 (in the case of NO in step S178 ), the processing unit 145 outputs, for example, to the output unit 142 for displaying that there is no waste paper T1 in the main feeding unit 10a signal and end processing.

When the processing unit 145 determines that there is waste paper T1 (YES in step S178 ), the processing unit 145 determines whether or not the raw material T2 ( The load T) is judged (step S179).

When the processing unit 145 determines that there is no raw material T2 (in the case of NO in step S179 ), the processing unit 145 outputs, for example, to the output unit 142 a signal for indicating that there is no raw material T2 in the sub-supply unit 10b , and end processing.

When the processing unit 145 determines that the raw material T2 is present (YES in step S179 ), the processing unit 145 reads the value of N stored in the storage unit 143 again (step S174 ).

When the processing unit 145 determines that the raw material T2 cannot be supplied (NO in step S176 ), the processing unit 145 rewrites the value of N and stores N=3 in the storage unit 143 (step S180 ).

Next, the processing unit 145 judges whether or not there is waste paper T1 on the stacking unit 110 of the main feeding unit 10a based on the first sensor 131 (step S181).

When the processing unit 145 determines that there is no waste paper T1 (in the case of NO in step S181 ), the processing unit 145 outputs, for example, to the output unit 142 for displaying that there is no waste paper T1 in the main feeding unit 10a signal and end processing.

When the processing unit 145 determines that there is waste paper T1 (YES in step S181 ), the processing unit 145 reads the value of N stored in the storage unit 143 again (step S174 ).

1.3.3.2. The case of N=1

When the value of N read in step S174 is 1, the processing unit 145 supplies the waste paper T1 from the main supply unit 10a at the first interval (step S182). Specifically, the processing unit 145 outputs the above-described third signal to the main supply unit 10a.

Next, the processing unit 145 judges whether or not the waste paper T1 can be supplied from the main supply unit 10a (step S183). Specifically, the processing unit 145 determines whether or not the waste paper T1 is discharged from the extraction port 118 based on the third sensor 133 .

When the processing unit 145 determines that the waste paper T1 can be supplied (YES in step S183 ), the processing unit 145 rewrites the value of N and stores N=2 in the storage unit 143 (step S184 ).

Next, the processing unit 145 determines whether or not the waste paper T1 exists on the stacking unit 110 of the main feeding unit 10a based on the first sensor 131 (step S178).

When the processing unit 145 determines that the waste paper T1 cannot be supplied (NO in step S183 ), the processing unit 145 rewrites the value of N and stores N=4 in the storage unit 143 (step S185 ).

Next, the processing part 145 judges whether the raw material T2 exists in the loading part 100 of the main supply part 10b based on the 2nd sensor 132 (step S179).

As described above, by repeating the path of N=1 and the path of N=2, the waste paper T1 and the raw material T2 are alternately supplied. In addition, it is also possible to adopt a method in which the supply of the load T from one supply unit 10 and the load T from the other supply unit 10 are performed in predetermined units (for example, every one or every two sheets). The supply of the switch is switched so as to be supplied alternately. Alternatively, it is also possible to adopt a method in which the supply is alternately performed by switching in different quantity units. For example, a first amount (for example, five sheets) of loads T may be supplied from one supply unit 10 , and a second amount (for example, one sheet) of loads T may be supplied from the other supply unit 10 . thing T.

On the other hand, when the load T of any one of the main supply part 10a or the sub-supply part 10b is used up, the supply part 10 in which the load T remains is used to continue the supply. This situation will be described below.

1.3.3.3. The case of N=3

When the value of N read in step S174 is 3, the processing unit 145 supplies the waste paper T1 from the main supply unit 10a at the second interval (step S186). Specifically, the processing unit 145 outputs, to the main supply unit 10a, a signal for driving the motor and the rollers 113 and 114 connected to the vertical drive shaft 112 of the main supply unit 10a.

Next, the processing unit 145 judges whether or not the waste paper T1 can be supplied from the main supply unit 10a (step S187). Specifically, the processing unit 145 determines whether or not the waste paper T1 is discharged from the extraction port 118 based on the third sensor 133 .

When the processing unit 145 determines that the waste paper T1 can be supplied (YES in step S187 ), the processing unit 145 rewrites the value of N and stores N=3 in the storage unit 143 (step S180 ). Thereby, the supply of the autonomous supply part 10a is repeated.

When the processing unit 145 determines that the waste paper T1 cannot be supplied (in the case of NO in step S187 ), the processing unit 145 outputs, for example, to the output unit 142 a signal for indicating that the main feeding unit 10 a cannot supply the paper , and end processing.

1.3.3.4. The case of N=4

When the value of N read in step S174 is 4, the processing unit 145 supplies the raw material T2 from the sub-supply unit 10b at the second interval (step S188). Specifically, the processing unit 145 outputs a signal for driving the motor and the rollers 113 and 114 connected to the vertical drive shaft 112 of the sub-supply unit 10b to the sub-supply unit 10b.

Next, the processing unit 145 judges whether or not the sub-supply unit 10b can supply the raw material T2 (step S189). Specifically, the processing unit 145 determines whether or not the raw material T2 is discharged from the extraction port 118 based on the fourth sensor 134 .

When the processing unit 145 determines that the raw material T2 can be supplied (YES in step S189 ), the processing unit 145 rewrites the value of N and stores N=4 in the storage unit 143 (step S185 ). Thereby, the supply from the sub-supply part 10b is repeated.

When the processing unit 145 determines that the raw material T2 cannot be supplied (in the case of NO in step S189 ), the processing unit 145 outputs, for example, to the output unit 142 a signal for indicating that the sub-supply unit 10b cannot supply, for example, and end processing.

In the third control process, by repeating the path of N=1 and the path of N=2, the waste paper T1 and the raw material T2 are alternately supplied. In the case of the route of N=3 or N=4, supply is performed from one of the supply units 10a and 10b. For example, when feeding is performed only from the main feeding part 10a, as shown in Fig. 7(b) , the waste paper T1 and T1 are provided in a state of being spaced apart from each other. In the conventional sheet manufacturing apparatus, since the load is supplied from one supply unit, this is the state. In this case, a gap in which no paper is conveyed occurs between the waste papers T1 and T1. Therefore, there is an unsupplied portion, which is a fluctuation of the supply amount. On the other hand, when the first interval M1 is made shorter than the length in the conveyance direction of the waste paper T1 or the raw material T2, as shown in FIG. 7(a), the waste paper T1 and the raw material T2 are partially overlapped. In addition, although not shown in the figure, when the first interval is made the same as the length in the conveyance direction of the waste paper T1 or the raw material T2, the waste paper T1 and the raw material T2 are neither overlapped nor a gap is formed. In either case, it is possible to reduce fluctuations in the supply amount of the load T to be supplied to the coarse crushing unit 12 as compared with the case where the waste paper T1 is supplied from one supply unit. For example, when it is attempted to supply from one supply unit so as to shorten the interval between adjacent waste papers T1, paper jams tend to occur. Therefore, the waste paper T1 and T1 are fed at the second interval M2 with a gap therebetween. Furthermore, in the third control process, since a part of the waste paper T1 and a part of the raw material T2 are supplied so as to overlap, even if the position of the waste paper T1 or the raw material T2 is shifted, no gap is formed.

Here, the first interval M1 and the second interval M2 mean that when the load T (waste paper T1 or raw material T2 ) is continuously supplied from the supply unit to the shredding unit 12 , the first load and the subsequent first load are The distance between the loaded and supplied second loads (assuming the shortest distance between the two loads when the first and second loads are supplied in the horizontal direction). In addition, although the 1st interval M1 and the 2nd interval M2 are set as a distance, you may set it as a time interval. In addition, the first interval M1<the second interval M2.

Furthermore, in the third control process, the supply speed of the load T to be supplied to the coarse crushing unit 12 can be increased as compared with the case of supplying from only one supply unit. Furthermore, by driving the supply parts 10a and 10b alternately, the load on the supply parts 10a and 10b can be reduced. Since these effects are also obtained, in the third control process, the waste paper T1 and the raw material T2 may not be used, and the waste paper T1 may also be loaded in the sub-feeder 10b.

In addition, a part of waste paper T1 and a part of raw material T2 do not need to be supplied so that they may not overlap. In this case, compared with the case of supplying from only one supply unit, the gap between the adjacent loads T can be reduced, and the fluctuation of the supply amount of the loads T supplied to the coarse crushing unit 12 can be reduced. Furthermore, the supply speed of the load T supplied to the coarse crushing unit 12 can be increased, and the processing amount per unit time can be increased. Furthermore, the burden on the supply units 10a and 10b can be reduced.

In the third control process, since the sensors 135, 136, 137, and 138 are not used, these sensors may not be provided.

The sheet manufacturing apparatus 100 has, for example, the following features.

The sheet manufacturing apparatus 100 includes: a manufacturing unit 102 that manufactures sheets S; a plurality of supplying units 10 that supply the loaded objects T to the manufacturing unit 102; The loaded objects T supplied from the individual supply units 10 are conveyed in such a manner that they overlap with each other. Therefore, in the sheet manufacturing apparatus 100, for example, when two pieces of waste paper T1 are overlapped, even if the whiteness of the overlapped one waste paper T1 is low, the whiteness of the other waste paper T1 is low. Even when the degree of whiteness is high, the degree of whiteness can be averaged. This is not only for whiteness, but also for other characteristics. Therefore, in the sheet manufacturing apparatus 100, the influence of the waste paper T1 on the sheet S can be reduced compared with the case where only the waste paper T1 is supplied from one supply unit. As a result, in the sheet manufacturing apparatus 100, it is possible to suppress that the characteristics of the sheet S to be manufactured vary depending on the characteristics of the supplied waste paper T1.

Furthermore, in the sheet manufacturing apparatus 100, the loaded objects T are conveyed to the shredding section 12 so as to overlap the loaded objects T supplied from the plurality of supply units 10, and therefore, it is different from the case where the loaded objects T are not overlapped. Compared with the case of conveying in a different manner, the sheet S with less variation in characteristics can be produced. Furthermore, in the sheet manufacturing apparatus 100 , the loaded objects T are conveyed to the shredding unit 12 so that the loaded objects T supplied from the plurality of supply units 10 are overlapped, so even if there are a plurality of supply units 10 , the There is no need to provide a plurality of coarse crushing sections 12 . Therefore, in the sheet manufacturing apparatus 100, an increase in the number of components can be suppressed.

The sheet manufacturing apparatus 100 is provided with the control part 140 which makes the supply part 10 perform supply so that a part of the load T may be overlapped. In the sheet manufacturing apparatus 100, the supply from the supply unit 10 is controlled by the control 140, whereby the sheet S with a small variation in characteristics can be manufactured.

In the sheet manufacturing apparatus 100, the waste paper T1 and the raw material T2 are conveyed so as to overlap the waste paper T1 supplied from the main supply unit 10a and the raw material T2 supplied from the sub supply unit 10b. The raw material T2 is a predetermined raw material and is suitable as a raw material of the manufactured sheet. The raw material T2 has a higher whiteness, a longer fiber length, and is close to the grammage of the manufactured sheet compared with, for example, general waste paper, and has less foreign matter. Therefore, in the sheet manufacturing apparatus 100, by conveying the waste paper T1 and the raw material T2 so as to overlap, even if the whiteness of the supplied waste paper T1 is low, the fiber length is short, and the gram of the produced sheet is deviated from. It is heavy and there are many foreign substances, and the influence on the sheet S to be produced can be suppressed more reliably. In addition, by making the raw material T2 into a sheet, there is also an effect of facilitating quantitative supply. For example, in the case of a fibrous form, it is difficult to supply quantitatively.

The sheet manufacturing apparatus 100 includes a control unit 140 that selectively supplies the raw material T2 from the sub-supply unit 10b in accordance with the waste paper T1. For example, when the characteristics of the waste paper T1 affect the manufactured sheet, the raw material T2 is supplied, and when the characteristics T1 of the waste paper does not affect the manufactured sheet, the raw material T2 is not supplied. Thereby, the frequency of use of the raw material T2 can be reduced.

In the sheet manufacturing apparatus 100, the volume of the raw material T2 that can be loaded in the sub-feeding part 10b is smaller than the volume of the waste paper T1 that can be loaded in the main feeding part 10a. Since the raw material T2 is only used as the raw material of the sheet, it is expected that the cost is low for the user. By reducing the volume of the raw material T2 and reducing the size or thickness of the raw material T2, it is possible to reduce the cost.

In the sheet manufacturing apparatus 100, the sub-supply part 10b is arrange|positioned above the main-supply part 10a. In the sheet manufacturing apparatus 100, since the main feeder 10a has a larger load of the loaded objects T, when the subfeeder 10b is arranged below the mainfeeder 10a, it is hidden by the mainfeeder 10a, making it difficult to perform subfeeds. Supplementation of the supply unit 10b. Therefore, by arranging the sub-supply part 10b above the main-supply part 10a, the supplement of the sub-supply part 10b can be easily performed. In addition, since the user throws a large amount of waste paper T1 into the main supply unit 10a, when the waste paper T1 is thrown in, it is less likely to be fatigued when the user is at a lower position.

Furthermore, in the sheet manufacturing apparatus 100, since the sub-feeder 10b is arranged above the main feeder 10a, for example, the width direction of the waste paper T1 and the raw material T2 overlapped in the guide part 120 can be easily adjusted (with the waste paper T1 and the raw material). The size in the direction orthogonal to the conveying direction of T2) is the same. Specifically, when the width directions of the waste paper T1 and the raw material T2 are the same, the waste paper T1 and the raw material T2 can be supplied to the coarse crushing unit 12 so that the width directions of the waste paper T1 and the raw material T2 match. As a result, in the sheet manufacturing apparatus 100, the sheet S with a small variation in characteristics can be manufactured.

In addition, when there are errors in the sizes of the waste paper T1 and the raw material T2, and manufacturing errors such as the guide portion 120, within the range of these errors, the sheet manufacturing apparatus 100 can make the waste paper T1 and the raw material T2 It is supplied to the coarse crushing part 12 so that the width direction of the granules is the same.

Further, the sheet manufacturing method using the sheet manufacturing apparatus 100 includes the steps of: conveying the loaded objects T so as to overlap the loaded objects T supplied from the plurality of supply units 10; The process of manufacturing a sheet. Therefore, in the sheet manufacturing method using the sheet manufacturing apparatus 100 , it is possible to suppress fluctuations in the characteristics of the sheet S to be manufactured.

2. Modification of sheet manufacturing apparatus

Next, the sheet manufacturing apparatus 200 which concerns on the modification of this embodiment is demonstrated in detail. FIG. 8 is a perspective view schematically showing a sheet manufacturing apparatus 200 according to a modification of the present embodiment. Hereinafter, in the description of the sheet manufacturing apparatus 200, the difference from the example of the sheet manufacturing apparatus 100 described above will be described, and the description of the same points will be omitted.

As shown in FIGS. 2 and 3 , in the sheet manufacturing apparatus 100 described above, the raw material T2 supplied by the sub-supply unit 10b is a single sheet. On the other hand, as shown in FIG. 8, in the sheet manufacturing apparatus 200, the raw material T2 supplied by the sub supply part 10b is roll paper. The sub-feeding part 10b of the sheet manufacturing apparatus 200 has the rotation shaft part 212 which is the center of rotation of the roll paper.

In the sheet manufacturing apparatus 200, for example, compared with the sheet manufacturing apparatus 100, the weight reduction of the sub-feeder 10b can be achieved.

In addition, in the above-mentioned example, the loads T supplied from the plurality of supplying parts 10 are conveyed so as to overlap in the guide part 120, but it is also possible not to overlap in the guide part 120, but only need to make a pair of many The time during which the individual supply units 10 are driven (for example, the time during which the output rollers 114 are driven) may overlap.

In addition, in the above-described example, the load T supplied from the plurality of supply units 10 is conveyed to one coarse crushing unit 12 , however, the sheet manufacturing apparatus according to the present invention may be provided with a plurality of supply units 10 corresponding to the plurality of supply units 10 . Each coarse crushing part 12 is mixed, and after the coarse crushing is performed in the coarse crushing part 12, the respective coarse pieces (fine pieces) are mixed.

In addition, although the dry system was used in the above-mentioned example, the sheet manufacturing apparatus which concerns on this invention may use a wet system. For example, a disintegrating unit (pulper) may be used instead of the defibrating unit 20 , a deinking device may be used instead of the classifying unit 30 , and a papermaking unit may be used instead of the sheet forming unit 80 .

In addition, the sheet|seat S manufactured by the sheet manufacturing apparatus which concerns on this invention mainly means the thing formed in a sheet shape. However, it is not limited to a sheet-like substance, and a plate-like, Bode-like, or net-like shape may be used. Sheets in this specification are classified into paper and nonwoven fabric. Paper includes pulp or waste paper as a raw material and is formed into a thin sheet, and includes recording paper, wallpaper, wrapping paper, colored paper, drawing paper, drawing paper and the like for writing or printing. Non-woven fabrics are thicker or lower-strength substances than paper, and include general non-woven fabrics, fiberboard, toilet paper (cleaning toilet paper), kitchen paper, cleaners, filters, liquids (waste ink or oil) Absorbent materials, sound-absorbing materials, thermal insulation materials, cushioning materials, cushions, etc. In addition, as a raw material, vegetable fibers such as cellulose, chemical fibers such as PET (polyethylene terephthalate) and polyester fibers, and animal fibers such as wool and silk may be used.

In the present invention, a part of the configuration may be omitted within the range having the characteristics and effects described in the present application, or each embodiment or modified example may be combined.

The present invention includes substantially the same structures as those described in the embodiments (structures with the same functions, methods, and results, or structures with the same purposes and effects). Further, the present invention includes configurations in which non-essential parts of the configurations described in the embodiments are replaced. Moreover, this invention includes the structure which achieves the same effect as the structure demonstrated in embodiment, or the structure which can achieve the same object. Moreover, this invention includes the structure which added the well-known technique to the structure demonstrated in embodiment.

Symbol Description

1: tube; 2: funnel; 3, 4, 5: tube; 6: funnel; 7, 8: tube; 9: funnel; 10: supply part; 10a: main supply part; 10b: auxiliary supply part; 12: coarse Crushing part; 14: Crushing blade; 16: Frame body; 20: Defibrating part; 22: Introduction port; 24: Discharge port; 30: Classifying part; 31: Introduction port; 32: Cylinder part; 34: lower discharge port; 35: upper discharge port; 36: receiving part; 40: screening part; 42: introduction port; 44: discharge port; 50: mixing part; 52: additive supply part; 54: pipe; 56: blower; 60: accumulation part; 62: inlet; 70: web forming part; 72: mesh belt; 74: stretching roller; 76: suction mechanism; 78: humidity control part; 80: sheet forming part; 82: first bonding portion; 84: second bonding portion; 86: heating roller; 90: cutting portion; 92: first cutting portion; 94: second cutting portion; 96: discharge portion; 98: marking portion; 100: Sheet manufacturing apparatus; 102: Manufacturing section; 110: Stacking section; 112: Up and down drive shaft section; 113: Pick-up roller; 124: first guide part; 126: second guide part; 131: first sensor; 132: second sensor; 133: third sensor; 134: fourth sensor; 135: fifth sensor; 136: 137: seventh sensor; 138: eighth sensor; 140: control unit; 141: operation unit; 142: output unit; 143: storage unit; 144: storage medium; 145: processing unit; 200: sheet manufacturing device; 212: rotating shaft portion.

Claims (10)

1. A sheet manufacturing apparatus, characterized in that, comprising: a manufacturing department, which manufactures sheets; a plurality of supply units that supply the loaded load to the manufacturing unit, In the sheet manufacturing apparatus, the loaded objects are conveyed so as to overlap the loaded objects supplied from the plurality of supply units. 2. The sheet manufacturing apparatus according to claim 1, wherein A control unit is provided which causes the supply unit to perform supply so that a part of the load is overlapped. 3. The sheet manufacturing apparatus according to claim 1 or 2, wherein The plurality of supply units are provided with: a main supply section that supplies waste paper to the manufacturing section; a sub-supply unit that supplies a predetermined raw material to the manufacturing unit, In the sheet manufacturing apparatus, the waste paper and the raw material are processed so that the waste paper supplied from the main supply unit and the raw material supplied from the sub-supply unit are overlapped. delivery. 4. The sheet manufacturing apparatus according to claim 3, wherein The control part is provided with the control part which selectively implements the supply from the said sub-supply part based on the said waste paper. 5. The sheet manufacturing apparatus according to claim 3 or 4, wherein The volume of the raw material that can be loaded in the sub-supply portion is smaller than the volume of the waste paper that can be loaded in the main supply portion. 6. The sheet manufacturing apparatus according to claim 5, wherein The sub-supply portion is arranged above the main supply portion. 7. A method for manufacturing a sheet, comprising: a step of conveying the loads supplied from a plurality of supply units so as to overlap the loads; A process of manufacturing a sheet using the load. 8. A sheet manufacturing apparatus, characterized by comprising: a manufacturing department, which manufactures sheets; a plurality of supply units that supply loads to the manufacturing unit, In the sheet manufacturing apparatus, the load is alternately supplied from the plurality of supply units. 9. A sheet manufacturing apparatus, characterized by comprising: a manufacturing department, which manufactures sheets; a plurality of supply units that supply loads to the manufacturing unit, In the sheet manufacturing apparatus, the supply is performed from the other supply portion of the plurality of supply portions while the supply portion is supplied from one of the plurality of supply portions. 10 . The sheet manufacturing apparatus according to claim 1 , wherein: 10 . Even if the load cannot be supplied by any one of the plurality of supply parts, the other supply part continues to supply the load.

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